package thread;

class MyThread extends Thread{
    @Override
    public void run() {
        while (true){
            System.out.println("hello mythread");
            try{
                Thread.sleep(1000);
            }catch (InterruptedException e){
                throw new RuntimeException(e);
            }
        }
    }
}

public class Demo1 {
    public static void main(String[] args) throws InterruptedException {
        //创建 Thread 类的子类，在子类中重写 run 方法
        Thread t = new MyThread();

        t.start();

        while(true){
            System.out.println("hello main");
            Thread.sleep(1000);
        }
    }
}
